CN203092699U - Bamboo recombined material - Google Patents
Bamboo recombined material Download PDFInfo
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- CN203092699U CN203092699U CN 201320008721 CN201320008721U CN203092699U CN 203092699 U CN203092699 U CN 203092699U CN 201320008721 CN201320008721 CN 201320008721 CN 201320008721 U CN201320008721 U CN 201320008721U CN 203092699 U CN203092699 U CN 203092699U
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Abstract
The utility model discloses a bamboo recombined material. The bamboo recombined material comprises bamboo bundles and bamboo frameworks of a bamboo natural hollow structure, wherein the bamboo bundles are formed by grinding, directionally unfolding and defibering raw bamboo, the bamboo bundles with adhesives are arranged at the bottom layer and the top layer, the bamboo frameworks coated with adhesives are arranged among the bamboo bundles, and the gaps among the bamboo frameworks are filled with the bamboo bundles with the adhesives. The bamboo recombined material resolves the problem that natural bamboo material is not integrated easily due to irregular shape, and resolves the problem that an existing recombined bamboo structure is high in density, large in self-weight, free of frameworks and low in strength. The bamboo recombined material is applicable to various beams and pillars for construction, building wall surfaces, door plates, furniture floors and surface plates, has good market development prospects, widens the application field of bamboo material, and increases the economical additional value of bamboo products.
Description
Technical field
The utility model belongs to the material field, relates to bamboo wood reorganization material technical field, and a kind of bamboo matter recombined material is provided.
Background technology
Bamboo grove is called the second largest forest of the earth, and China has bamboo grove the biggest in the world, and the exploitation bamboo resource is significant to China's economy and ecological construction.Bamboo wood has the short characteristics of growth cycle, is the material of green sustainable application.In addition, the structure of the hollow belt of bamboo wood joint makes bamboo wood have high vertically tension, compression strength, bending strength, and advantages such as good springiness are good industrial living beings raw material.At present, bamboo wood is used widely as the living beings raw material of industry, not only produces wood-based plate, laminated timber by the bamboo wood modification, and the ortho states bamboo wood is also fully developed.The research of bamboo wood reorganization is used deep day by day, bamboo wood reorganization at present, integrated/long-pending representational patent of becoming a useful person have: Fu Wansi proposes to utilize former bamboo to form building post beam (CN 101323124, CN101885199A, CN 101323124, CN 201254784) by the original-state multidirectional reorganization, its bamboo section outer surface that diameter is suitable is processed into the bamboo wood unit of regular polygonization, with its cross section by the edge-to-edge discharge side by side, vertically finger prolongs the bamboo wood recombined material that bonding forms.Li Yushun proposes to utilize two bamboo offset plate sandwich profiled sheets to make composite floor (CN101280586A).Zhang Qisheng proposes a kind of bamboo strip laminated board manufacture method (CN100999092A), utilizes thin bamboo strips used for weaving to apply adhesive hot pressing and well-thought-out plan is long-pending becomes a useful person.Yang Yongfu proposes natural hollow-core construction bamboo/wood composite board and process patent (CN101985219A), it utilizes the suitable bamboo section of diameter to be processed into imperfect four-prism, laterally piece together the horizontal jigsaw of wide one-tenth honeycomb shape arbitrarily, upper and lower surface overlays veneer and forms natural hollow-core construction bamboo composite board.
Can be bamboo bundle reorganization after utilizing bamboo wood to discongest for the utilization of bamboo wood in the prior art, or utilize whole bamboo to recombinate.But with bamboo bundle with put in order bamboo and combine that to constitute the reorganization material still be a blank.
The utility model content
The purpose of this utility model is to improve the deficiencies in the prior art, and a kind of natural hollow-core construction of bamboo wood of both having utilized is provided, and utilizes the bamboo matter recombined material of former bamboo processing well-thought-out plan Shu Rongyi shaping characteristic again.
The purpose of this utility model is achieved in that
A kind of bamboo matter recombined material, it comprises that former bamboo is through the bamboo ribs frame that rolls, the natural hollow-core construction of bamboo wood is restrainted and kept to the directed bamboo that flattens and discongest and obtain; The described bamboo bundle which is provided with adhesive is arranged on bottom and top layer, and the described bamboo ribs frame that is coated with adhesive is set therebetween, and fill by the described bamboo bundle that is provided with adhesive in the space between the described bamboo ribs frame.
The thick bamboo tube section that described bamboo ribs frame is cut into for the whole bamboo that does not have bamboo green layer.
Described bamboo ribs frame is not for having bamboo green layer, the thick bamboo tube section that the whole bamboo of surface roughness Ra value between 6.5～7 μ m is cut into.
Described bamboo ribs frame is in the intrafascicular individual layer of bamboo, two-layer or multilayer setting, and wherein in each layer, described bamboo ribs frame is formed a line by two or more above-mentioned thick bamboo tube sections and constitutes, and is provided with described bamboo bundle between adjacent two layers bamboo ribs frame.
On the same end face of bamboo matter recombined material, up and down or the adjacent described thick bamboo tube section in the left and right sides place big end according to one another placed small end mode and places, guarantee that recombined material axially goes up consistent size.
Described adhesive is UF, PF, MDI or other this areas adhesive commonly used.
Thick bamboo tube section as described bamboo ribs frame is: its circle beating degree is≤10mm; And/or the tapering of thick bamboo tube section is: (outside diameter-end diameter)/bamboo segment length, this tapering≤0.02.
The preparation method of above-mentioned bamboo matter recombined material, it comprises the steps:
(1) from natural whole bamboo intercepting preseting length bamboo section, this bamboo section is heat-treated, carry out afterwards drying handle to moisture content be 5～20%, green grass or young crops is gone on the surface, and carries out surface roughening and handle, and finally obtains the bamboo ribs frame;
(2) choose again former bamboo through rolling, directed flatten and discongest obtain the bamboo bundle, it is 5～20% that the bamboo bundle is dried to moisture content;
(3) bamboo bundle and bamboo ribs frame after the above-mentioned processing layering successively are positioned in the mould, place one or more layers skeleton, placement order is followed successively by: bottom is placed and is set the bamboo bundle that thickness soaked adhesive, place the bamboo ribs frame that soaked adhesive above successively, the top successively again bamboo bundle that soaked adhesive of placing, the bamboo bundle is filled into the gap between the bamboo ribs frame, in layer places, until the requirement that reaches the required size specification, top layer is for setting the bamboo bundle that thickness soaked adhesive;
(4), make bamboo bundle and bamboo ribs frame form the bamboo matter recombined material of one by the blank in the hot pressing or the curing mold of colding pressing.
The demoulding afterwards.Recombined material for the demoulding can carry out post-production such as shaping and moulding.
In the 4th step, the mode of exerting pressure is: exert pressure simultaneously from level, vertical both direction respectively; The speed of exerting pressure is not more than 0.5MPa/min, when the arrival 8.5MPa that exerts pressure stops to exert pressure and pressurize, if cold curing needs pressurize more than 24 hours, and if heat cure needed pressurize 15～30 minutes, determine to be cured pressure drop stage, unloading.Wherein heat cure can realize by logical 100 ℃ of vapours/hot-airs in bamboo matter recombined material four sides pressing plate and bamboo ribs frame.
Described pressure drop stage is specially: applied pressure was dropped to the 6MPa pressurize 8 minutes, dropped to the 3MPa pressurize again 8 minutes, last thoroughly release.
In (3) individual step, adjacent whole bamboo bamboo section is arranged described bamboo ribs frame according to a big end in abutting connection with another small end mode up and down or on the same end face in the left and right sides, guarantees that like this recombined material axially goes up consistent size.
Select when putting in order bamboo, should select straight whole bamboo as far as possible, the bamboo section of intercepting is straight being advisable.
Make the specific practice of bamboo section surface roughness be: slicing or sand milling to be carried out in bamboo ribs frame surface, make the surface roughness Ra value between 6.5～7 μ m.
Bamboo matter recombined material and manufacture method thereof that the utility model provides, solved natural bamboo because out-of-shape is difficult to integrated problem, and traditional bamboo wood/long-pending solid construction density height of becoming a useful person causes deadweight excessive, and does not have skeleton to cause intensity low, uses limited problem.Described bamboo matter recombined material by former bamboo through rolling, directed flatten and discongest obtain the bamboo bundle, it is 5～20% that the bamboo bundle is dried to moisture content, impregnated timber binding agent (for example phenolic resins or the suitable binding agent of other performances) forms the assembly raw material, the bamboo bundle raw material layering that to soak glue is placed in the assembly mould bamboo section of the whole bamboo intercepting after wherein skeleton uses and handles.Place individual layer, two-layer or multilayer as the whole bamboo of skeleton according to the size of recombined material, wherein each layer skeleton is made of two or more whole bamboos, adjacent whole bamboo is placed big end according to one another is placed small end mode and places on the same end face, guarantees that like this recombined material axially goes up consistent size.Described bamboo ribs frame is placed among the mould successively with the bamboo bundle raw material that soaked glue, and bottom is placed the bamboo bundle raw material that soaked glue, and binding agent bamboo ribs frame was executed in top successively placement, places the bamboo bundle raw material that soaked glue more successively on the bamboo ribs frame, so in layer places.Press formation bamboo matter recombined material through the hot/cold of mould.Regular shape bamboo ribs frame is selected and intercepted in bamboo unit in the described bamboo ribs frame according to the crooked situation of natural whole bamboo shape,, again the bamboo ribs frame carried out anticracking processing, drying and surface and go green grass or young crops, surface roughening to handle, and is beneficial to the gluing with the bamboo bundle.
The utility model had both utilized the natural hollow-core construction of bamboo wood, utilized former bamboo processing well-thought-out plan Shu Rongyi shaping characteristic again, can further improve the natural bamboo utilization rate.Compared with prior art, the material that obtains has advantage in light weight, that intensity is high.Folder is established the bamboo section in bamboo bundle layer, and compared with tubing or the pole stock of establishing other materials at the intrafascicular folder of bamboo, its intensity that mutually combines is higher because performance is close, in conjunction with connect more firm.
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, is not to restriction of the present utility model, every any this area of being carried out according to the utility model disclosure be equal to replacement, all belong to protection domain of the present utility model.
Description of drawings
Fig. 1 is the manufacturing process flow diagram of the bamboo matter recombined material that provides of the utility model;
Fig. 2 is the intention of the whole bamboo selected for use, and whole bamboo goes green grass or young crops and surface roughening treatment process;
Fig. 3 is that bamboo matter recombined material moulding assembly material is placed the operation schematic diagram;
Fig. 4 is the molding procedure schematic diagram;
Fig. 5, Fig. 6 and Fig. 7 are respectively the structural representations of the bamboo matter recombined material of all thickness specification.
The specific embodiment
As Fig. 5,6 and shown in Figure 7, the bamboo matter recombined material that the utility model provides comprises that former bamboo is through rolling, directedly flattening and discongest and obtain bamboo bundle 3 and keep the bamboo ribs frame 2 of the natural hollow-core construction of bamboo wood; The described bamboo bundle 3 which is provided with adhesive is arranged on bottom and top layer, and the described bamboo ribs frame 2 that is coated with adhesive is set therebetween, and fill by the described bamboo bundle that is provided with adhesive in the space between described bamboo ribs frame 2.
Described bamboo ribs frame 2 is preferably the bamboo section (see figure 2) that the whole bamboo that do not have bamboo green layer is cut into.
Described bamboo ribs frame 2 is placed on individual layer (seeing Fig. 5, Fig. 7), two-layer (see figure 6) or multilayer setting in the bamboo bundle 3 according to the size of beam column, wherein in each layer, described bamboo ribs frame is provided with described bamboo bundle by two (seeing Fig. 5, Fig. 6) or the above-mentioned bamboo section of a plurality of (see figure 7) formation that forms a line between adjacent two layers bamboo ribs frame.
Being illustrated in figure 1 as the manufacture craft flow process of the bamboo matter recombined material that the utility model provides, particularly, can be such technical process:
(1) according to the crooked situation of natural whole bamboo 1 shape, select promptly more straight whole bamboo 1 (see figure 2) of regular shape, whole bamboo 1 is carried out the intercepting of bamboo section, heat-treat for the thick bamboo tube section of intercepting then, promptly carrying out anticracking handles, then, carry out drying, make that the moisture content of bamboo section is about 10%, the purpose of such process is to make the bamboo section reach anticracking and maintenance dimensionally stable function, then, carry out the surface for the bamboo section and go green grass or young crops, and carry out surface roughening and handle, adopt slicing or sand milling technology, make its surface roughness Ra value between 6.5～7 μ m, finally obtain bamboo ribs frame 2;
(2) former bamboo through rolling, directed flatten and discongest obtain bamboo bundle 3, through super-dry, making bamboo bundle 3 be dried to moisture content is about 10%;
(3) bamboo bundle 3 and bamboo ribs frame 2 after the above-mentioned processing layering successively are positioned in the mould, place one or more layers skeleton according to the size requirements of material requested, placement order is followed successively by: bottom is placed the bamboo bundle 3 that soaked adhesive, place the bamboo ribs frame 2 that soaked adhesive above successively, the top successively again bamboo bundle 3 that soaked adhesive of placing, in layer place, until reaching necessary requirement;
(4) press bamboo bundle 3 and bamboo ribs frame 2 in the bonding mould to form bamboo matter recombined material by hot/cold.
According to the crooked situation of former bamboo shape, select that axis is straight, whole bamboo 1 (see figure 2) of regular shape, and go green grass or young crops and rough surface to handle, be cut into sectional bamboo section then, constitute bamboo ribs frame 2.
Again some former bamboos are made bamboo bundle 3 through discongesting.
In the step (1), the method for choosing straight bamboo ribs frame can be by the round beating degree and the tapering control of surveying the thick bamboo tube section of making the bamboo ribs frame, and its circle beating degree is≤10mm to limit the flexibility of thick bamboo tube section with this; The tapering of thick bamboo tube section is: (outside diameter-end diameter)/bamboo segment length, this tapering≤0.02;
Described heat treatment in step (1) and dry process promptly are to carry out boiling drying then for the thick bamboo tube section, and multiple relevant method is arranged in the prior art, the preferred a kind of heat treatment method of present embodiment, and specific practice can be:
Whole bamboo is cut into the thick bamboo tube section of preseting length;
On ring, bore a hole;
Boiling is handled: the thick bamboo tube section is immersed in concentration 0.8% sodium chloride and the 1% acetic acid mixed solution, and the normal pressure water temperature is raised to 90 ℃ by nature, heating-up time 15min, boiling boiling 4h.
Steam heat is handled: will put in order the bamboo section and neatly place vapor can, with the vapour pressure of 0.18Mpa, 116 ℃ of temperature, constant heat treatment 90min.
Dry: as the bamboo section after the steam heat processing to be put into the dry kiln with spray steaming function carry out drying, be divided into the following operational phase:
A. the drying of whole thick bamboo tube section is piled up: in can spraying steaming damping temperature steam drying kiln, adjustable wind speed reaches 3 meters/s.The axial line of whole thick bamboo tube section is consistent with the thermal air current velocity attitude.The whole bamboo section in front and back should be on same axis.The whole thick bamboo tube section of levels is used parting bead and is evenly separated.
B. dry initial period-high humidity warm-up phase.The thick bamboo tube section at the high humidity warm-up phase is: humidity is 90% in the kiln, 60 ℃ of temperature, time 24h.
C. dry period-drying stage.The temperature of drying stage is 55 ℃, and humidity is 75%, and the time is 48h.
D. dry end period-balance drying stage.The temperature of thick bamboo tube section balance drying stage is 58 ℃, and humidity is 85%, and the time is 24h.The whole bamboo section moisture content in dry back reaches 12%.
Heat-treating dry main purpose is to make that the thick bamboo tube section is anticorrosion, and anticracking can also make the thick bamboo tube section guarantee dimensionally stable.
As shown in Figure 3, when assembly, in mould, alternately place bamboo bundle 3 and bamboo ribs frame 2, at first bottom is placed bamboo bundle 3, places bamboo ribs frame 2 above, places bamboo bundle 3 more in the above, specifically determine as required by bamboo matter recombined material as for the number of plies of alternately placing, the size at the two ends of bamboo ribs frame 2 has difference, and the modes of emplacement of bamboo ribs frame 2 is: adjacent whole bamboo is all placed according to another mode of placing small end of placing big end on the same end face of mould, guarantees that like this recombined material axially goes up consistent size.
Described adhesive can be UF, PF or MDI, or other this areas adhesive commonly used.
As shown in Figure 4,, in mould, place blank, then, pass through the hot pressing of mould or cold pressing obtaining bamboo matter recombined material according to the assemble pattern among Fig. 3.
Be illustrated in figure 5 as one deck skeleton is only arranged, each layer skeleton only has the bamboo matter recombined material of two thick bamboo tube sections, be illustrated in figure 6 as two-layer skeleton, each layer skeleton only has the bamboo matter recombined material of two thick bamboo tube sections, Figure 7 shows that one deck skeleton is only arranged, each layer skeleton has the bamboo matter recombined material of four thick bamboo tube sections, needs whole bamboo matter recombined material to carry out surface treatment and respective handling at last.
In the 4th step,, the mode of exerting pressure is: exert pressure simultaneously from level, vertical both direction respectively; The speed of exerting pressure is not more than 0.5MPa/min, when the arrival 8.5MPa that exerts pressure stops to exert pressure and pressurize, if cold curing needs pressurize more than 24 hours, for example as Fig. 5 and example shown in Figure 7, but pressurize 30 hours, example as shown in Figure 6 can pressurize 35-40 hour.If heat cure needed pressurize 15～30 minutes, determine to be cured pressure drop stage, unloading.Wherein heat cure can realize by logical 100 ℃ of vapours/hot-airs in bamboo matter recombined material four sides pressing plate and bamboo ribs frame.
Described pressure drop stage is specially: applied pressure was dropped to the 6MPa pressurize 8 minutes, dropped to the 3MPa pressurize again 8 minutes, last release fully.
The benefit of pressure drop stage is: progressively eliminate thermal deformation and internal stress that hot pressing produces, guarantee that bamboo matter recombined material geomery is stable.If a step-down then may cause bamboo matter recombined material change of shape even destruction owing to the local big thermal deformation of material produces the internal stress abrupt release.
The bamboo matter recombined material that the utility model provides is the hollow bamboo matter recombined material with skeleton, thick bamboo tube section with whole bamboo is clipped in intrafascicular of bamboo, the whole natural physical arrangement high strength of bamboo, high tenacity characteristics had both been made full use of, the bamboo constriction that the has absorbed modification again easy moulding advantage of becoming a useful person realizes the dual realization of size, regular shape and intensity targets.In the intrafascicular bamboo section that is provided with of bamboo, identical but the composite that form is different of a kind of material has been proposed, compound compared with different materials, wherein the bond strength of the part of different shape is higher, and stable performance under the variation of environment temperature.The bamboo matter recombined material that the utility model provides can be applicable to various beam columns for building, building metope, door-plate and furniture floor, panel, has the good prospect of marketing, has expanded the bamboo wood application, increases bamboo product economy added value.
Claims (8)
1. a bamboo matter recombined material is characterized in that: comprise that former bamboo is through the bamboo ribs frame that rolls, the natural hollow-core construction of bamboo wood is restrainted and kept to the directed bamboo that flattens and discongest and obtain; The described bamboo bundle which is provided with adhesive is arranged on bottom and top layer, and the described bamboo ribs frame that is coated with adhesive is set therebetween, and fill by the described bamboo bundle that is provided with adhesive in the space between the described bamboo ribs frame.
2. bamboo matter recombined material according to claim 1 is characterized in that: the thick bamboo tube section that described bamboo ribs frame is cut into for the whole bamboo that does not have bamboo green layer.
3. bamboo matter recombined material according to claim 1 is characterized in that: described bamboo ribs frame is not for having bamboo green layer, the thick bamboo tube section that the whole bamboo of surface roughness Ra value between 6.5～7 μ m is cut into.
4. according to claim 1 or 2 or 3 described bamboo matter recombined materials, it is characterized in that: described bamboo ribs frame is in the intrafascicular individual layer of bamboo, two-layer or multilayer setting, wherein in each layer, the thick bamboo tube section that described bamboo ribs frame is cut into by two or more whole bamboos forms a line and constitutes, and is provided with described bamboo bundle between adjacent two layers bamboo ribs frame.
5. bamboo matter recombined material according to claim 4 is characterized in that: on the same end face of bamboo matter recombined material, up and down or the adjacent described thick bamboo tube section in the left and right sides place big end according to one another placed small end mode and places.
6. bamboo matter recombined material according to claim 1 is characterized in that: described adhesive is UF, PF or MDI.
7. according to one of claim 1 to 3 or 5 or 6 described bamboo matter recombined materials, it is characterized in that: the thick bamboo tube section as described bamboo ribs frame is: its circle beating degree is≤10mm; And/or the tapering of thick bamboo tube section is: (outside diameter-end diameter)/bamboo segment length, this tapering≤0.02.
8. bamboo matter recombined material according to claim 4 is characterized in that: the thick bamboo tube section as described bamboo ribs frame is: its circle beating degree is≤10mm; And/or the tapering of thick bamboo tube section is: (outside diameter-end diameter)/bamboo segment length, this tapering≤0.02.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320008721 CN203092699U (en) | 2013-01-08 | 2013-01-08 | Bamboo recombined material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320008721 CN203092699U (en) | 2013-01-08 | 2013-01-08 | Bamboo recombined material |
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| Publication Number | Publication Date |
|---|---|
| CN203092699U true CN203092699U (en) | 2013-07-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320008721 Expired - Fee Related CN203092699U (en) | 2013-01-08 | 2013-01-08 | Bamboo recombined material |
Country Status (1)
| Country | Link |
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| CN (1) | CN203092699U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105034092A (en) * | 2015-06-25 | 2015-11-11 | 南京林业大学 | Efficient production method for cold-pressed recombined bamboo timber |
| CN108608551A (en) * | 2018-04-07 | 2018-10-02 | 南京林业大学 | A kind of Recombined bamboo non-uniform member manufacture mold |
-
2013
- 2013-01-08 CN CN 201320008721 patent/CN203092699U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105034092A (en) * | 2015-06-25 | 2015-11-11 | 南京林业大学 | Efficient production method for cold-pressed recombined bamboo timber |
| CN105034092B (en) * | 2015-06-25 | 2017-10-10 | 南京林业大学 | A kind of efficient production method for being cold-pressed Recombined bamboo |
| CN108608551A (en) * | 2018-04-07 | 2018-10-02 | 南京林业大学 | A kind of Recombined bamboo non-uniform member manufacture mold |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20180108 |
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| CF01 | Termination of patent right due to non-payment of annual fee |